Cách sử dụng
The phrase "build up to" means to prepare yourself gradually for something. For example, if you want to run a marathon, you might start by running shorter distances and building up to longer ones over time. Similarly, if you have a big presentation coming up, you might practice giving it in front of smaller audiences and gradually build up to presenting to a larger group. In both cases, you are slowly getting ready for something by taking smaller steps along the way.